Explain why polar hormones cannot regulate their target cells without using second messengers. Alsoexplain in a step-by-step manner how cyclic AMP is used as a second messenger in hormone action.

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Q: a. Referring to the signalling diagrams above, complete the table below. Consider how cell…

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Q: Describe how and why the cell's response and response speed differs between peptide and steroid…

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Q: Which of the following labeled cells in the photomicrograph shown synthesizes antimullerian hormone?…

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Q: How is hormone binding to its receptor different from allosteric regulator binding to an enzyme?

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Q: What makes hormone binding to its receptor more like an allosteric regulator binding to an enzyme…

A: A target cell responds to a hormone because it contains the receptor sites for the hormone and cells…

Q: n general, what is the target cell’s response to the steroid hormone? Is the cell’s response quick…

A: A steroid hormone, any of a group of hormones that belong to the class of chemical compounds known…

Q: Aldosterone is an important steroid hormone that regulates water and salt balance. People with…

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Q: Why do steroid hormones (and TH) lead to relatively long-term changes in cells?

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Q: Describe a mechanism by which a steroid hormone might act to increase intracellular levels of cyclic…

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Q: The    consumption    of steroid   hormones can   be deteted by    analyzing urine.     Can the use…

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Q: In what ways is hormone binding to its receptor similar to an allosteric regulator binding to an…

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Q: In a hypothetical cAMP-mediated signal transduction cascade, the GTP-αs/adenylate cyclase…

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Q: Practice ques tion 1B) Mutations in the signalling pathways depicte d above have been associated…

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Q: Describe the main steps in catecholamines production and describe the most important regulatory…

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Q: Why is the fact that a monomeric hormone binds simultaneously to two identical receptor molecules,…

A: The growth-hormone receptor contains 638 amino acids, divided into a extracellular domain of 250…